exam Maths Puzzle Numerical Ability

Solve the system of equations by graphing. Then classify the systems as consistent or unconsistent and the equations as dependent or independent

3u+v=15
3u+v+33

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exam Other Question

A solution of 75% pesticide is to be mixed with a solution of 51% pesticide to form 48 liters of a 64% solution. How much of the 75% solution is needed? Please help! I don't understand how to put the following 2x2 matrix in matrix form. I know how to augment the matrix, but i cant solve it. I know the augmented answer is [-5 7 |